From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) by dpdk.org (Postfix) with ESMTP id E928911DE for ; Mon, 20 Mar 2017 09:07:00 +0100 (CET) Received: from 172.18.7.190 (EHLO lhreml702-cah.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DDC09455; Mon, 20 Mar 2017 08:06:58 +0000 (GMT) Received: from LHREML501-MBX.china.huawei.com ([10.201.109.49]) by lhreml702-cah.china.huawei.com ([10.201.108.43]) with mapi id 14.03.0301.000; Mon, 20 Mar 2017 08:06:54 +0000 From: "Avi Cohen (A)" To: "users@dpdk.org" Thread-Topic: incorrect tcp checksum on vxlan tunnel Thread-Index: AdKhUExxTdEtvWDVT+GHRiH/38pSTQ== Date: Mon, 20 Mar 2017 08:06:54 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.94.17] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.58CF8DA3.017B, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 27cae3916255ce783c7b091816d2255f Subject: [dpdk-users] incorrect tcp checksum on vxlan tunnel X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Mar 2017 08:07:01 -0000 Hello, I'm running ovs-dpdk with vxlan tunnel Setup like http://docs.openvswitch.org/en/latest/howto/userspace-tunneling/ I'm running iperf3 on the endpoints VMs - and I see incorrect TCP checksum = at the server side (this is seen after vxlan decap) I don't think this is ovs-dpdk issue - since the tcp checksum is set in the= inner packet (VM payload) , hence should be set by the VM. Who can assist ? Best regards avi